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  <title>createMessage method - V2TIMMessageManager class - v2_tim_message_manager library - Dart API</title>


  
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    <li class="self-crumb">createMessage&lt;<wbr><span class="type-parameter">T</span>, <span class="type-parameter">F</span>&gt; method</li>
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<h1><span class="kind-method">createMessage&lt;<wbr><span class="type-parameter">T</span>, <span class="type-parameter">F</span>&gt;</span> method 
</h1></div>

    <section class="multi-line-signature">
      

<span class="returntype"><a href="https://api.flutter.dev/flutter/dart-async/Future-class.html">Future</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="../../web_compatible_models_v2_tim_value_callback/V2TimValueCallback-class.html">V2TimValueCallback</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="../../web_compatible_models_v2_tim_msg_create_info_result/V2TimMsgCreateInfoResult-class.html">V2TimMsgCreateInfoResult</a></span>&gt;</span></span>&gt;</span></span>
<span class="name ">createMessage</span>&lt;<wbr><span class="type-parameter">T</span>, <span class="type-parameter">F</span>&gt;(<wbr><ol class="parameter-list"><li><span class="parameter" id="createMessage-param-type">{<span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span> <span class="parameter-name">type</span>, </span></li>
<li><span class="parameter" id="createMessage-param-params"><span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/Map-class.html">Map</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span>, <span class="type-parameter">dynamic</span>&gt;</span></span> <span class="parameter-name">params</span>}</span></li>
</ol>)

      

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<section class="summary source-code" id="source">
  <h2><span>Implementation</span></h2>
  <pre class="language-dart"><code class="language-dart">Future&lt;V2TimValueCallback&lt;V2TimMsgCreateInfoResult&gt;&gt; createMessage&lt;T, F&gt;({required String type, required Map&lt;String, dynamic&gt; params}) async {
  var messageSimpleElem = {};
  switch (type) {
    case &quot;text&quot;:
      {
        var text = params[&#39;text&#39;] ?? &#39;&#39;;
        messageSimpleElem = CreateMessage.createSimpleTextMessage(text);
        break;
      }
    case &quot;custom&quot;:
      {
        String data = params[&#39;data&#39;] ?? &#39;&#39;;
        String desc = params[&#39;desc&#39;] ?? &quot;&quot;;
        String extension = params[&#39;extension&#39;];
        messageSimpleElem = CreateMessage.createSimpleCustomMessage(data, desc, extension);
        break;
      }
    case &quot;face&quot;:
      {
        int index = params[&#39;index&#39;] ?? &#39;&#39;;
        String data = params[&#39;data&#39;] ?? &#39;&#39;;
        messageSimpleElem = CreateMessage.createSimpleFaceMessage(index: index, data: data);
        break;
      }
    case &quot;image&quot;:
      {
        messageSimpleElem = await CreateMessage.createSimpleImageMessage(params);
        break;
      }
    case &quot;textAt&quot;:
      {
        String text = params[&#39;text&#39;] ?? &#39;&#39;;
        List&lt;String&gt; atUserList = params[&#39;atUserList&#39;] ?? [];
        messageSimpleElem = CreateMessage.createSimpleAtText(atUserList: atUserList, text: text);
        break;
      }
    case &quot;location&quot;:
      {
        String desc = params[&#39;description&#39;] ?? &#39;&#39;;
        double longitude = params[&#39;longitude&#39;] ?? 0;
        double latitude = params[&#39;latitude&#39;] ?? 0;
        messageSimpleElem = CreateMessage.createSimpleLoaction(description: desc, longitude: longitude, latitude: latitude);
        break;
      }
    case &quot;mergeMessage&quot;:
      {
        List&lt;String&gt; msgIDList = params[&#39;msgIDList&#39;] ?? [];
        String title = params[&#39;title&#39;] ?? &quot;&quot;;
        List&lt;String&gt; abstractList = params[&#39;abstractList&#39;] ?? &#39;&#39;;
        String compatibleText = params[&#39;compatibleText&#39;];
        messageSimpleElem = CreateMessage.createSimpleMergeMessage(msgIDList: msgIDList, title: title, abstractList: abstractList, compatibleText: compatibleText);
        break;
      }
    case &quot;forwardMessage&quot;:
      {
        final webRawMessage = timeweb!.findMessage(params[&#39;msgID&#39;]);
        messageSimpleElem = await CreateMessage.createSimpleForwardMessage(webRawMessage: webRawMessage);
        break;
      }
    case &quot;video&quot;:
      {
        String videoFilePath = params[&#39;videoFilePath&#39;] ?? &#39;&#39;;
        dynamic file = params[&#39;inputElement&#39;];
        messageSimpleElem = await CreateMessage.createSimpleVideoMessage(
          videoFilePath,
          file,
        );
        break;
      }
    case &quot;file&quot;:
      {
        messageSimpleElem = await CreateMessage.createSimpleFileMessage(filePath: params[&#39;filePath&#39;] ?? &#39;&#39;, fileName: params[&#39;fileName&#39;] ?? &quot;&quot;, file: params[&#39;inputElement&#39;]);
        break;
      }
  }
  var result = handleSetMessageMap(messageSimpleElem);
  return CommonUtils.returnSuccess&lt;V2TimMsgCreateInfoResult&gt;(result);
}</code></pre>
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    <h5>V2TIMMessageManager class</h5>
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